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has been cited by the following article:

• TITLE: The Effect of Near-Wall Vortices on Wall Shear Stress in Turbulent Boundary Layers

  AUTHORS: Shuangxi Guo, Wanping Li

  KEYWORDS: Spectral Methods, Two-Dimensional Turbulence, Wall Shear Stress, Two-Point Correlation

  JOURNAL NAME: Engineering, Vol.2 No.3, April 13, 2010

  ABSTRACT: The objective of the present study is to explore the relation between the near-wall vortices and the shear stress on the wall in two-dimensional channel flows. A direct numerical simulation of an incompressible two-dimensional turbulent channel flow is performed with spectral method and the results are used to examine the relation between wall shear stress and near-wall vortices. The two-point correlation results indicate that the wall shear stress is associated with the vortices near the wall and the maximum correlation-value location of the near-wall vortices is obtained. The analysis of the instantaneous diagrams of fluctuation velocity vectors provides a further expression for the above conclusions. The results of this research provide a useful supplement for the control of turbulent boundary layers.